Finding the Fourth Proportional to 1,054.37, 1,579.35 and 847.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.37 : 1,579.35 = 847.82 : x
2. Step 2: Convert to fraction form
   1,054.37/1,579.35 = 847.82/x
3. Step 3: Cross multiply
   1,054.37x = 1,579.35 × 847.82
4. Step 4: Simplify right side
   1,054.37x = 1,339,004.52
5. Step 5: Solve for x
   x = 1,339,004.52/1,054.37
6. Step 6: Final answer
   x = 1,269.96